Updates from August 28, 2005

Mayflies

Caddisflies

Stoneflies

Closeup insects by Troutnut from Fall Creek in New York

Argia Damselfly Nymph

View 3 PicturesMy friend Willy captured this early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) damselfly nymph and brought it to me for identification. It is more robust and stocky at this early stage than the spindly appearance of the later instars (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.), and its appearance is less familiar.

Collected August 28, 2005 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 14, 2006

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Jargon Defined:

Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.

Nymph: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).